If you ever get an error message that includes the term "no reachable proxies", the most common cause is Windows resetting it's firewall settings. All you have to do is restart your computer and you will be good to go.
Another cause, can be your computers anti-virus or firewall software blocking SurfEasy. Please consult the guides for these pieces of software to learn how to allow or unblock programs, such as SurfEasy from working. There are two SurfEasy.exe that you will have to allow. One is the browser, the other is the security tunnel. You may also have to allow Firefox as the SurfEasy browser is based off this software.